Brūnaim baíriþ baírka bōgum láubans liubans liudandei, gilwagrōni, glitmunjandei, bagmē blōma, bláuandei, fagrafahsa, liþulinþi, fráujinōndei faírguni.	Bright branches and tender leaves bears the sprouting birch, pale-green, glimmering, flowers of the trees, blooming, fair and happy, lithe of limb, ruling the mountain.
Wōpjand windōs, wagjand lindōs,   lūtiþ limam láikandei; slaíhta, raíhta, ƕeitarinda, razda rōdeiþ reirandei, bandwa baírhta, runa gōda, þiuda meina þiuþjandei.	Howling winds, shaking lindens, She lowers her limbs playfully; slender and straight and white-barked, she speaks a laughing language, bright token, good secret, a blessing to my people.
Andanahti milhmam neipiþ, liuhteiþ liuhmam laúhmuni; láubōs liubai fliugand láusai, tulgus, triggwa, standandei. Baírka baza beidiþ bláika fráujinōndei faírguni.	The evening grows dark with clouds, and is lit up by lightning; the tender leaves fly loose, she stands faithful and true. The bare birch waits pale, ruling the mountain.

Above is Tolkein's gothic song, Bagmē Blōma, and my own attempt at a fairly literal translation.  Tolkein cleverly devises 17 new words in this poem which we can add to the gothic lexicon (some of which i have similarly devised for various Gothic for Goths lessons, such as *grōneis).

There are some much better translations and analyses here:

Since this is the only decent example i have of secular gothic (though it is not from the gothic era), it is worth doing an analysis here of what's really going on in this text.

*brūnaim	baíriþ	*baírka	*bōgum
bright/shining?	bears	birch	limb, branch
adj.dat.pl. 'brūns'	v.t.3s.pres.ind. 'baíran'	n.f.nom.sing.	n.m.dat.sing. 'bōgus'
láubans	*liubans	liudandei,
leaves	dear/cherished	growing
n.m.acc.pl. 'láufs'	adj.acc.pl. 'liufs'	adj.f.nom.sing.
		from pres.part. 'liudan'
*gilwa-	*grōni	glitmunjandei
yellow?	green	glittering/glimmering
pfx.adj. 'gilws'	adj.f.nom.sing. 'grōneis'	adj.f.nom.sing. 'glitmunjands'
		from pres.part. 'glitmunjan'
bagmē	blōma	*bláuandei
of-trees	flowers	blooming
n.m.gen.pl 'bagms'	n.m.nom.sing.	adj.f.nom.sing. 'bláuandei'
		from pres.part. 'bláuan'
fagra-	fahsa	liþu-	*linþi
fair	happy/glad	limb	lithe/flexible
pfx.adj. 'fagrs'	adj.f.nom.sing. 'fahs'	pfx.n.m. 'liþus'	adj.f.nom.sing.
fráujinōndei	faírguni
ruling	mountain
adj.f.nom.sing. 'fráujinōnds'	n.n.nom.sing.
from pres.part. 'fráujinōn'
wōpjand	windōs	wagjand	*lindōs
calling/crying	winds	shaking	lindens
v.i.3p.pres.ind. 'wōpjan'	n.m.nom.pl. 'winds'	v.i.3p.pres.ind. 'wagjan'	n.f.nom.pl. 'linda'
*lūtiþ	*limam	láikandei
lowers	to-limbs	playing
v.t.3s.pres.ind. 'lūtan'	n.n.dat.pl. 'lim'	adj.f.nom.sing.'láikands'
		from pres.part. 'láikan'
*slaíhta	raíhta	ƕeita-	rinda
slender, slight	straight/right	white	rind/bark
razda	rōdeiþ	reirandei
language	speaks	trembling/quivering
bandwa	baírhta	runa	gōda
sign/token	bright	secret/mystery	good
þiuda	meina	þiuþjandei
people	my/mine	blessing
andanahti	milhmam	*neipiþ
evening/twilight	to-clouds	darkens
liuhteiþ	*liuhmam	laúhmuni
lights	to-lights	lightning
v.3.sing.pres.ind.	n.st.n. dat. pl.	n.nom.sing.
láubōs	*liubai	*fliugand	láusai
leaves	dear/cherished	flying	loose
	adj. m.nom.pl.
tulgus	triggwa	standandei
firm/steady	true/faithful	standing
*baírka	*baza	beidiþ	*bláika
birch	bare	bides	pale
fráujinōndei	faírguni
ruling	mountain
adj.f.nom.sing. 'fráujinōnds'	n.n.nom.sing.
from pres.part. 'fráujinōn'